A magnitude 3.9 earthquake has hit Hollywood as some of the globe's top stars began celebrating after the Oscars.

The earthquake's epicentre was measured in North Hollywood, just miles from where the awards ceremony was hosted at the Dolby Theatre.

There were no immediate reports of damage or injuries. The quake struck shortly after 22:00 local time as celebrities were gathering at the popular Vanity Fair afterparty.

Those in the area reported a sudden jolt of energy, with some screaming and seeing high-rise buildings wobbling like jelly. BBC reported.

The US Geological Survey (USGS), which tracks such events, said the earthquake was felt miles across Los Angeles.

There was no tsunami alert issued as a result of the relatively minor earthquake.

The Los Angeles Fire Department said that the earthquake was felt across downtown Los Angeles but the agency was not entering into "Earthquake Mode" over the incident.

For stronger earthquakes, first responders and officials do assessments of the area to ensure there is no structural damage to buildings and infrastructure.